Update

after/syntax/haml.vim

@@ -5,6 +5,11 @@ if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'coffee-script')
 " URL:         http://github.com/kchmck/vim-coffee-script
 " License:     WTFPL
 
+
+if exists('b:current_syntax')
+  let s:current_syntax_save = b:current_syntax
+endif
+
 " Inherit coffee from html so coffeeComment isn't redefined and given higher
 " priority than hamlInterpolation.
 syn cluster hamlCoffeescript contains=@htmlCoffeeScript
@@ -14,4 +19,9 @@ syn region  hamlCoffeescriptFilter matchgroup=hamlFilter
 \                                  contains=@hamlCoffeeScript,hamlInterpolation
 \                                  keepend
 
+if exists('s:current_syntax_save')
+  let b:current_syntax = s:current_syntax_save
+  unlet s:current_syntax_save
+endif
+
 endif